| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.metamodel.jdbc; |
| |
| import java.sql.PreparedStatement; |
| import java.sql.SQLException; |
| |
| import org.apache.metamodel.drop.AbstractTableDropBuilder; |
| import org.apache.metamodel.drop.TableDropBuilder; |
| import org.apache.metamodel.jdbc.dialects.IQueryRewriter; |
| import org.apache.metamodel.query.FromItem; |
| import org.apache.metamodel.schema.Schema; |
| import org.apache.metamodel.schema.Table; |
| |
| /** |
| * {@link TableDropBuilder} that issues an SQL DROP TABLE statement |
| * |
| * @author Kasper Sørensen |
| */ |
| final class JdbcDropTableBuilder extends AbstractTableDropBuilder implements TableDropBuilder { |
| |
| private final JdbcUpdateCallback _updateCallback; |
| private final IQueryRewriter _queryRewriter; |
| |
| public JdbcDropTableBuilder(JdbcUpdateCallback updateCallback, Table table, IQueryRewriter queryRewriter) { |
| super(table); |
| _updateCallback = updateCallback; |
| _queryRewriter = queryRewriter; |
| } |
| |
| @Override |
| public void execute() { |
| String sql = createSqlStatement(); |
| |
| PreparedStatement statement = _updateCallback.getPreparedStatement(sql, false); |
| try { |
| _updateCallback.executePreparedStatement(statement, false); |
| |
| // remove the table reference from the schema |
| final Schema schema = getTable().getSchema(); |
| if (schema instanceof JdbcSchema) { |
| ((JdbcSchema) schema).refreshTables(); |
| } |
| } catch (SQLException e) { |
| throw JdbcUtils.wrapException(e, "execute drop table statement: " + sql); |
| } |
| } |
| |
| protected String createSqlStatement() { |
| FromItem fromItem = new FromItem(getTable()); |
| String tableLabel = _queryRewriter.rewriteFromItem(fromItem); |
| |
| return "DROP TABLE " + tableLabel; |
| } |
| |
| } |